1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2004 James Cleverdon, IBM. 4 * 5 * Generic APIC sub-arch probe layer. 6 * 7 * Hacked for x86-64 by James Cleverdon from i386 architecture code by 8 * Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and 9 * James Cleverdon. 10 */ 11 #include <linux/thread_info.h> 12 #include <asm/apic.h> 13 14 #include "local.h" 15 16 /* Select the appropriate APIC driver */ 17 void __init x86_64_probe_apic(void) 18 { 19 struct apic **drv; 20 21 enable_IR_x2apic(); 22 23 for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) { 24 if ((*drv)->probe && (*drv)->probe()) { 25 apic_install_driver(*drv); 26 break; 27 } 28 } 29 } 30 31 int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id) 32 { 33 struct apic **drv; 34 35 for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) { 36 if ((*drv)->acpi_madt_oem_check(oem_id, oem_table_id)) { 37 apic_install_driver(*drv); 38 return 1; 39 } 40 } 41 return 0; 42 } 43